I build the kolla-toolbox failed with following error message, rather than the python-six. Maybe the bug description should be modified?

INFO:__main__:kolla-toolbox:  Found existing installation: pytz 2012d
INFO:__main__:kolla-toolbox:    DEPRECATION: Uninstalling a distutils installed project (pytz) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.
INFO:__main__:kolla-toolbox:
INFO:__main__:kolla-toolbox:    Uninstalling pytz-2012d:
INFO:__main__:kolla-toolbox:      Successfully uninstalled pytz-2012d
INFO:__main__:kolla-toolbox:Exception:
INFO:__main__:kolla-toolbox:Traceback (most recent call last):
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/basecommand.py", line 209, in main
INFO:__main__:kolla-toolbox:    status = self.run(options, args)
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/commands/install.py", line 317, in run
INFO:__main__:kolla-toolbox:    prefix=options.prefix_path,
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/req/req_set.py", line 742, in install
INFO:__main__:kolla-toolbox:    requirement.commit_uninstall()
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/req/req_install.py", line 765, in commit_uninstall
INFO:__main__:kolla-toolbox:    self.uninstalled.commit()
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/req/req_uninstall.py", line 142, in commit
INFO:__main__:kolla-toolbox:    rmtree(self.save_dir)
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/_vendor/retrying.py", line 49, in wrapped_f
INFO:__main__:kolla-toolbox:    return Retrying(*dargs, **dkw).call(f, *args, **kw)
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/_vendor/retrying.py", line 212, in call
INFO:__main__:kolla-toolbox:    raise attempt.get()
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/_vendor/retrying.py", line 247, in get
INFO:__main__:kolla-toolbox:    six.reraise(self.value[0], self.value[1], self.value[2])
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/_vendor/retrying.py", line 200, in call
INFO:__main__:kolla-toolbox:    attempt = Attempt(fn(*args, **kwargs), attempt_number, False)
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/utils/__init__.py", line 101, in rmtree
INFO:__main__:kolla-toolbox:    onerror=rmtree_errorhandler)
INFO:__main__:kolla-toolbox:  File "/usr/lib64/python2.7/shutil.py", line 247, in rmtree
INFO:__main__:kolla-toolbox:    rmtree(fullname, ignore_errors, onerror)
INFO:__main__:kolla-toolbox:  File "/usr/lib64/python2.7/shutil.py", line 247, in rmtree
INFO:__main__:kolla-toolbox:    rmtree(fullname, ignore_errors, onerror)
INFO:__main__:kolla-toolbox:  File "/usr/lib64/python2.7/shutil.py", line 247, in rmtree
INFO:__main__:kolla-toolbox:    rmtree(fullname, ignore_errors, onerror)
INFO:__main__:kolla-toolbox:  File "/usr/lib64/python2.7/shutil.py", line 247, in rmtree
INFO:__main__:kolla-toolbox:    rmtree(fullname, ignore_errors, onerror)
INFO:__main__:kolla-toolbox:  File "/usr/lib64/python2.7/shutil.py", line 252, in rmtree
INFO:__main__:kolla-toolbox:    onerror(os.remove, fullname, sys.exc_info())
INFO:__main__:kolla-toolbox:  File "/usr/lib/python2.7/site-packages/pip/utils/__init__.py", line 109, in rmtree_errorhandler
INFO:__main__:kolla-toolbox:    if os.stat(path).st_mode & stat.S_IREAD:
INFO:__main__:kolla-toolbox:OSError: [Errno 2] No such file or directory: '/tmp/pip-yvw854-uninstall/usr/lib/python2.7/site-packages/pytz-2012d-py2.7.egg-info'
INFO:__main__:kolla-toolbox: